Unconventional superconductivity in YNi2B2C

TL;DR

This paper investigates the magnetic field angle dependence of density of states and thermal conductivity in YNi2B2C, revealing insights into its unconventional superconducting properties with line nodes.

Contribution

It applies the semi-classical Doppler shift approximation to model anisotropic superconductivity in YNi2B2C, matching experimental observations.

Findings

Good quantitative agreement with experimental data

Identification of line nodes along k_x=0 and k_y=0

Insights into the anisotropic gap structure

Abstract

We use the semi-classical (Doppler shift) approximation to calculate magnetic field angle-dependent density of states and thermal conductivity kappa_zz for a superconductor with a quasi-two-dimensional Fermi surface and line nodes along k_x=0 and k_y=0. The results are shown to be in good quantitative agreement with experimental results obtained for YNi2B2C.